A characteristic hole drilled in its body that means "ellipse". When water passes through it, the tail vibrates, and the presence is firmly conveyed at hand. This vibration not only makes it easier to use, but also has a higher appeal.
It is highly customizable, and if you cut the fins, you can change it into a size-up version of the small worm "Plankton 1.8", and if you cut the fins vertically, you can change it into a tail worm with two fins.
It is a very easy-to-use worm that is excellent in both ease of use and appeal. Please try using it once.